MR11 Patron halogen spotlight bulb GU4 10W 12V 2700K 30° – small spotlight, glass reflector

Q: Is it worth buying an LED instead of a halogen?

It depends on the intended use: LED is better: if energy saving, long lifespan, and low electricity bills are priorities. MR11 LEDs consume about 80% less energy and last 5-10 times longer (15,000-25,000 h vs. 2,000-4,000 h). Halogen is better: if perfect color rendering (CRI 100) is a priority. Halogen produces the most natural color possible, which is important for lighting artworks, jewelry, and colorful products. Premium LEDs achieve about Ra 90-95, not a perfect 100. For general lighting, LED is almost always the better choice. For professional use (museums, gallery staff, jewelry stores), halogen retains an advantage in color rendering.

SKU 5941019829181

€4.85 - €4.85

€4.85

€4.85 - €4.85

€4.85

includes VAT 25.5% Shipping costs are calculated at checkout.

Availability:

in stock, ready to be shipped

The MR11 halogen spotlight is a small low-voltage lamp, particularly suitable for small spotlights, chandeliers, display cabinets, and decorative lighting. The 35 mm diameter and 30° beam angle produce a soft spotlight, while the 2700K warm tone is suitable for creating ambiance in households, restaurants, and exhibition lighting. The glass reflector provides clear and natural light distribution.

⚠ Made-to-order product

Delivery time approximately 1 week from order. Availability can be checked in the shopping cart.

Requires a 12V transformer. GU4 base — not to be confused with the GU5.3 (MR16) base.

Technical specifications

Lamp type: MR11 halogen spotlight (low voltage)
Base: GU4 (two-pin, 4 mm pin spacing)
Voltage: 12 V (requires a transformer)
Power: 10 W
Color temperature: 2700 K (warm white)
Beam angle: 30° (spotlight)
Color rendering index (CRI): Ra 100 (typical for halogen)
Reflector type: Glass
Service life: typically 2,000–4,000 hours
Dimmable: Yes (with compatible dimmers)
Diameter: 35 mm
Length: 35 mm
Product code: 5941019829181

Compatibility and installation

Requires a 12V transformer

This is a 12V low-voltage lamp that requires a 12V transformer to operate. The transformer converts the household 230V mains voltage to 12V. You can find compatible transformers (both electronic and magnetic) in our selection under the Electrical Supplies → Transformers category.

Check the transformer wattage

The transformer's power must match the lamp (or the total power of multiple lamps). For example, for one 10W lamp, the transformer must be at least 10W. For several lamps, calculate the total power and choose the transformer accordingly — it is often advisable to leave a small margin (e.g., four 10W lamps = 40W, choose a 50–60W transformer).

MR11 vs. MR16 — important distinction

MR-type low-voltage spotlights are available in several sizes:

MR11 — diameter 35 mm, base GU4 (4 mm pins) — this product
MR16 — diameter 51 mm, base GU5.3 (5.3 mm pins) — larger alternative

These are not interchangeable — they have different bases and sizes. Check the fixture base and the lamp size requirements before ordering.

Typical applications

Small spotlights and cabinet lights
Chandeliers and decorative fixtures requiring a small spotlight
Exhibition lighting and art display lighting (for background, not main spotlighting due to long-term exposure)
Hotel and restaurant spaces
Vintage interior lamps where the MR11 size is standard

Halogen lamp — usage notes

Halogen lamps get hot during use — do not touch the glass surface when the lamp is on or has just been turned off. The service life is typically 2,000–4,000 hours, which is significantly shorter than LED alternatives (15,000–25,000 h). However, halogen retains its advantage with perfect CRI 100 color rendering, which is ideal for professional use (art pieces, jewelry, colorful products).

Installation checklist

Check that the fixture has a GU4 base (not GU5.3)
Check that you are using a 12V transformer with sufficient power for the total wattage of the lamps
Check that the lamp dimensions (Ø35 × 35 mm) fit the fixture
Turn off the power before installation — do not touch the lamp glass with your fingers (grease can shorten service life)
Install the lamp and turn the power on

Consider an LED alternative

If energy savings and longer service life are important, consider MR11 LED spotlights, which use about 80% less energy and last up to 25,000 hours. However, halogen retains its advantage with perfect CRI 100 color rendering, which is particularly important when lighting art pieces and jewelry.

Quantity

Delivery and Warranty

Delivery

We ship your order from our warehouse in Jyväskylä. Orders placed before 2 PM are usually shipped on the same day. Free delivery within Finland for orders over €150.

Warranty

Products purchased through Lumenled come with a manufacturer's warranty, supported by Lumenled in cooperation with the importer. You can find detailed warranty terms here: Warranty terms of our partners.

Usein kysytyt kysymykset

What is the difference between MR11 and MR16 bulbs?

MR lamps are low-voltage spotlights, with MR11 and MR16 being the most common: MR11 — 35 mm diameter, GU4 base (4 mm pins) — smaller model MR16 — 51 mm diameter, GU5.3 base (5.3 mm pins) — larger model They are not interchangeable — different base and different size. MR11 is needed for small luminaires, MR16 for larger ones. Check the luminaire's base and size before ordering.

Does this lamp require a separate transformer?

Yes. An MR11 halogen lamp operates on 12V low voltage, so it requires a 12V transformer to connect to a 230V mains voltage. The transformer can be either electronic or magnetic, and its power must match the total power of all connected lamps. A 10W transformer is sufficient for a single 10W lamp; for multiple lamps, sum up their total power. You can find compatible transformers in the Transformers category.

Is it worth buying an LED instead of a halogen?

It depends on the intended use:

LED is better: if energy saving, long lifespan, and low electricity bills are priorities. MR11 LEDs consume about 80% less energy and last 5-10 times longer (15,000-25,000 h vs. 2,000-4,000 h).

Halogen is better: if perfect color rendering (CRI 100) is a priority. Halogen produces the most natural color possible, which is important for lighting artworks, jewelry, and colorful products. Premium LEDs achieve about Ra 90-95, not a perfect 100.

For general lighting, LED is almost always the better choice. For professional use (museums, gallery staff, jewelry stores), halogen retains an advantage in color rendering.

Can this bulb be used as a replacement for previous halogen bulbs?

Yes, if the old bulb was an MR11 GU4 12V model and 10W or similar. The current transformer usually fits directly, as long as its power is sufficient. Check the bulb's dimensions (Ø35 × 35 mm) and that the base is GU4 (not GU5.3). If the old bulb is larger (e.g., MR16 51 mm diameter), this MR11 will not fit — you'll need an MR16 model.